157. Simon and Garfunkel, 'The Sounds of Silence'

Simon wrote this as an acoustic ballad, but Simon and Garfunkel's first single version died. While Simon was in England, Wilson, who was producing Bob Dylan's "Like a Rolling Stone," asked members of Dylan's studio band to add electric guitar and drums. Columbia released the amplified "Silence," which became a hit before Simon and Garfunkel had even heard it.